Z-Hop Type Not Always Applied Correctly #2251

New Issue

MrUnknownDE · 2026-04-06T02:23:48+02:00

MrUnknownDE commented

2026-04-06 02:23:48 +02:00

Originally created by @staal54a on 9/9/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1-alpha

Operating System (OS)

Windows

OS Version

Windows 11

Additional system information

No response

Printer

AnkerMake M5

How to reproduce

Open a new project and select one of the AnkerMake M5 profiles
Add an object that has several different retraction + travel sequences
Set z-hop type to spiral and z-hop height to 0.4mm
Slice and check whether all z-hops are of spiral type (may only occur with certain models, see attached project)

Actual results

Some Z-Hops are just normal/regular and not of the specific type applied (such as spiral or slope).

Expected results

I would expect every Z-Hop to be of the type specified.

Project file & Debug log uploads

missing_zhop_example.zip

Checklist of files to include

Log file
Project file

Anything else?

This is for sure happening with AnkerMake M5 profiles and it may be happening with other printer profiles. When I first looked into it a while ago (see issue https://github.com/SoftFever/OrcaSlicer/issues/8285), I dug into the code and thought it might have something to do with some internal timelapse option I couldn't unset for the AnkerMake printers for some reason. Also, at that time, I did notice that with another one of my printer profiles, if I rotated the same model, I saw the same issue. So it could be that specific geometry causes this issue as well with other profiles.

See a screenshot of a G-Code file preview where it occurs as well:

There's another question/area this makes me wonder about and it's the Auto setting. I would think Auto should never choose a Normal style Z-Hop as Slope or Spiral are always better (at least in my experience). But I did notice recently on a different printer I had where Auto would cause a lot of stringing on the same model because it chose Normal Z-Hop for some retractions, for some reason.

*Originally created by @staal54a on 9/9/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1-alpha ### Operating System (OS) Windows ### OS Version Windows 11 ### Additional system information _No response_ ### Printer AnkerMake M5 ### How to reproduce 1. Open a new project and select one of the AnkerMake M5 profiles 2. Add an object that has several different retraction + travel sequences 3. Set z-hop type to spiral and z-hop height to 0.4mm 4. Slice and check whether all z-hops are of spiral type (may only occur with certain models, see attached project) ### Actual results Some Z-Hops are just normal/regular and not of the specific type applied (such as spiral or slope). ### Expected results I would expect every Z-Hop to be of the type specified. ### Project file & Debug log uploads [missing_zhop_example.zip](https://github.com/user-attachments/files/22223734/missing_zhop_example.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? This is for sure happening with AnkerMake M5 profiles and it may be happening with other printer profiles. When I first looked into it a while ago (see issue https://github.com/SoftFever/OrcaSlicer/issues/8285), I dug into the code and thought it might have something to do with some internal timelapse option I couldn't unset for the AnkerMake printers for some reason. Also, at that time, I did notice that with another one of my printer profiles, if I rotated the same model, I saw the same issue. So it could be that specific geometry causes this issue as well with other profiles. See a screenshot of a G-Code file preview where it occurs as well: <img width="1315" height="973" alt="Image" src="https://github.com/user-attachments/assets/c6388bbc-061e-4bc1-ae2a-2a7fc16e8ebd" /> There's another question/area this makes me wonder about and it's the Auto setting. I would think Auto should never choose a Normal style Z-Hop as Slope or Spiral are always better (at least in my experience). But I did notice recently on a different printer I had where Auto would cause a lot of stringing on the same model because it chose Normal Z-Hop for some retractions, for some reason.

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Reference: github/OrcaSlicer#2251